Source Filmmaker

I'm having an issue where my FPS will drop substantially if I have the manipulators on screen. from a steady 40+ FPS, to around 8-9. Making animating impossible.It only happens if I'm in the graph editor, or the motion editor with a manipulator within frame.

Well depending on how many bones you select at once, this can happen. Even on my beast of a system things can slow down like crazy if I'm manipulating all the bones on a model at once. I'm curious, does this happen with static props as well as character models? If it does then my theory is basically blown.

I think i finally found out the problem. I have a shot that is very long (15 minutes). If the selection range in the motion editor is too large, and the manipulator on screen, then it will lag. I only need to reduce my motion range and everything is perfect :).